For injection, why not make an adaptor plate for a 4.3 V6 TBI? Twin Injectors, twin butterfly's.... savvy??? The overcompensation could allow you to do dry NOS (which is safer).
Also, I think you may need new ECM programming for the 3.0L. May I recommend the ECM unit from west coast fiero's, or a Greddy E-manage. The greddy would probabbly work best, but I beleive the WCF is easier to install, as it is sorta made for Fiero's.
For the valves, why not get Del West Titanium valves??? They have them at the maximum diameter that the Fiero can support, which is like 2.08" or 2.02" or something like that.
------------------ Airman Michael C Casaceli Patrol Squadron Ten, United States Navy 1988 Pontiac Fiero 2.5L, soon to be 2.2L Ecotec Turbo (THE PROJECT HAS STARTED!!!) 1988 Oldsmobile Firenza 2.0L non-turbo (R.I.P.my beloved J-body. KIA by a Ford) 1994 Chevy S-10 4.3, it's finally here, and it is gorgeous!
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02:03 AM
FastIndyFiero Member
Posts: 2546 From: Wichita, KS Registered: Aug 2002
For injection, why not make an adaptor plate for a 4.3 V6 TBI? Twin Injectors, twin butterfly's.... savvy??? The overcompensation could allow you to do dry NOS (which is safer).
Also, I think you may need new ECM programming for the 3.0L. May I recommend the ECM unit from west coast fiero's, or a Greddy E-manage. The greddy would probabbly work best, but I beleive the WCF is easier to install, as it is sorta made for Fiero's.
For the valves, why not get Del West Titanium valves??? They have them at the maximum diameter that the Fiero can support, which is like 2.08" or 2.02" or something like that.
have an adapter for a 5.0/5.7 tbi already made. will be using it in between smog checks.
the dyno shop in santee, ca is giong to be doing my programming. will program 2 different brains. 1 for 2.5 tbi, and 1 for 5.0 tbi.
like the small valves for the bottom end. this motor should work real well from idle right up to 6000 redline.
almost have daughters playhouse done. will be nice to get back to working on this monster. want to take it to buttonwillo for open day at the track this year.
This was 9 months ago so where are these promised numbers and also did you win that race and what was it against???
JM
race was with sentra s.e.r. beat him handily.
now for update. daughter's playhouse finally done. back to work on monster. had to convert to 87-8 style pulleys and brackets for intake to clear everything. should be able to go to dyno shop for programming sometime this month. hopefully will be daily driver in next few weeks. will dirve it with stock struts till money is available for shortening koni's. this homeowner thing is taking its toll on projects. such as life............................................
Long live the duke man.......I like what you're doing with it so keep up the good work amigo.
Austin
------------------ Practice makes perfect, but since nobody's perfect, why practice? If life gives you lemons, take them and throw them at people you hate.
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12:57 AM
Apr 21st, 2004
Flyguyeddy Member
Posts: 568 From: pekin, Il USA Registered: Dec 2003
you had to machine 3/4 of an inch of the crank to get it to work!?!?! damn! can anyone come up with the number needed?
keep in mind, once i machined off the back of crank, i had to have a flywheel made for it. also had to drill and tap the end of crank for new bolt pattern. crank casting number can be any of the following: 3788522, 3793082, or 5743014. this is a 3.25 inch stroke crank out of 62-70 nova with 153 engine.
ok, let me rephrase that, what about using a stock 2.5 flexplate for an automatic WITH the auto tranny. i know better than to use a clutch on a flexplate... jeesh
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10:57 PM
Apr 23rd, 2004
mrossum Member
Posts: 804 From: lake havasu city, az Registered: Oct 2000
ok, let me rephrase that, what about using a stock 2.5 flexplate for an automatic WITH the auto tranny. i know better than to use a clutch on a flexplate... jeesh
you would still have to have a flexplate made. the area that the flexplate/flywheel bolts to, after the machine work, is physically smaller than the hole in the flywheel.
ok, let me rephrase that, what about using a stock 2.5 flexplate for an automatic WITH the auto tranny. i know better than to use a clutch on a flexplate... jeesh
problem is there have been some people out there who would consider it...
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02:22 PM
May 7th, 2004
FieroGTT Member
Posts: 489 From: Hard Hittin' New Britain, CT Registered: Oct 2002
seems like my house has a thing against me working on my car. have not touched car in a month. still have not changed over to 87-8 style pulleys and accessories. will get there soon. please be patient.
this car is no longer. took it apart to finance some projects around the house. really bummed that i couldn't get it finished. such as life. still have my 88. good luck to all who have been or might be inspired by my effort.......................
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11:32 PM
Jul 30th, 2004
Flyguyeddy Member
Posts: 568 From: pekin, Il USA Registered: Dec 2003
have to keep crank and aluminum flywheel together. they were machined together and won't fit anything else. e-mail if interested. i also have marine crank with 3.600" stroke!!!
Yeah I concur. What a bunch of shizzle! Over a YEAR and not one dyno run or pic. Couldnt find a friend to scan a polaroid or something?? I built an "all out" duke about 7 years ago with every aftermarket part availavble except for SD parts.
Holley TBI and intake. Ported flowed head. 10 to 1 compression. Header and good free flowing exhaust. Msd. Comp Cam. BBC roller rockers.
Engine dyno'd at 150hp. What a waste.
[This message has been edited by donk316 (edited 07-30-2004).]
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01:58 AM
avengador1 Member
Posts: 35468 From: Orlando, Florida Registered: Oct 2001
I built an "all out" duke about 7 years ago with every aftermarket part availavble except for SD parts.
Holley TBI and intake. Ported flowed head. 10 to 1 compression. Header and good free flowing exhaust. Msd. Comp Cam. BBC roller rockers.
Engine dyno'd at 150hp. What a waste.
No not really. That would be the equivalent of a 300 hp 5.0, which is respectable considering the level of mods performed (not even a SD head) The stock head can't really do too much. What did you do for engine management electronics? Stock ECM?
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09:30 AM
Jul 31st, 2004
donk316 Member
Posts: 1952 From: Red Deer, Alberta, Canada Registered: Mar 2003
My point is, after spending 3000ish CDN for 150hp I could have <at the time> swapped in a really healthy 2.8
that isn't the point when i started this project. different was the key. i'm not into conforming. i spent enough money on this project to buy a new mustang, but i wanted something that no one else had. unfortunately, i ran out of time and money to finish it.maybe someday i'll try it again. still have the motor...............................
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01:05 AM
PFF
System Bot
jetman Member
Posts: 7794 From: Sterling Heights Mich Registered: Dec 2002
Thank you for allowing all of us here to live and dream vicariously through your big bad duke thread. This has been captivating to say the least. The thought of having a pavement pounding 4 cylinder is the realm of fantasy. Actually driving it, abet shortly, is a stout achievement. It is a sad day to hear that the project has ended. I have all the admiration in the world for you for your effort. You have walked where no one has dreamed, you should be proud. Perhaps someday the torch will be picked up again, I will be looking for you in that light.
Best wishes jet
------------------ jetman Silver 86 SE 2M6 4-speed, with "check wallet light" and "a good nights sleep"
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06:53 AM
fierodog Member
Posts: 972 From: Mantua, Ohio, USA Registered: Jun 2004
Thank you for allowing all of us here to live and dream vicariously through your big bad duke thread. This has been captivating to say the least. The thought of having a pavement pounding 4 cylinder is the realm of fantasy. Actually driving it, abet shortly, is a stout achievement. It is a sad day to hear that the project has ended. I have all the admiration in the world for you for your effort. You have walked where no one has dreamed, you should be proud. Perhaps someday the torch will be picked up again, I will be looking for you in that light.
Best wishes jet
I agree nice job man!! hopefully you can finish someday and have something everyone else can just dream about!
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09:31 AM
Aug 27th, 2004
mrossum Member
Posts: 804 From: lake havasu city, az Registered: Oct 2000
Yeah I concur. What a bunch of shizzle! Over a YEAR and not one dyno run or pic. Couldnt find a friend to scan a polaroid or something?? I built an "all out" duke about 7 years ago with every aftermarket part availavble except for SD parts.
Holley TBI and intake. Ported flowed head. 10 to 1 compression. Header and good free flowing exhaust. Msd. Comp Cam. BBC roller rockers.
Engine dyno'd at 150hp. What a waste.
this project was never about showing it off. it was about having something that no one else had. didn't get the opportunity to get it running well enough (computer controls) to take it to the dyno shop. believe me, i am very disappointed over not being able to complete this project. the car is long gone, but the engine and trans is still intact in my garage. maybe someday will be able to get it finished in another car. in the mean time, maybe someone else can use this info to make a truly ground stompin stroker 4 cyl motor that they can refine enough to run in a daily driver. ........................
if you want to see this engine, by all means, come on over and i'll pull oil pan, side cover and valve cover for you to see. otherwise, let the bs flag leave.
if you want to see this engine, by all means, come on over and i'll pull oil pan, side cover and valve cover for you to see. otherwise, let the bs flag leave.
Wow, helluva thread!
All this naysaying makes me want to beg you to finish the job!!! Prove the duke-haters wrong.
I love my Duke - it's peppy enough to leave a little rubber on the road (at least now with a Borla exhaust it is) and the fuel economy is outstanding. A solid engine that's great for daily driving is what I need, and that's what I've got. Couldn't be happier.
And if I made any changes, I wouldn't go for more power - I'd go for better fuel economy.
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04:07 AM
Sep 3rd, 2004
Voided Member
Posts: 178 From: Bucyrus, Ohio 44820 Registered: Jan 2003
There's no proof, and no pictures, and no one but the so called builder has talked about, or seen it.
if that's the case I've got a 500 horse forged bottom end 3.4 DOHC on 20 pounds of boost from a GTS 25 Turbo in my Widebody fiero with the side intercooler with a modifed radiator fan convecting More air into the vent, while a fan in the engine compartment helps draw the air behind the cooler, and the engine compartment hot air, out.
Sounds beautiful, but it's Thank you all, for playing along.
I'm not trying to flame, but it's the facts, NOTHING is truely documented in a factual sense here.
(edit real ending to my statement)
Despite what you'd wish to believe it's been tried time and again, and your duke is what it is, if you try and change it, it fails. they're Not good performance motors, ask any shop, ask any motor builder, ask anyone that's ran the crap out of a duke for a little while. they just aren't It.
good economy solution at the time, no more, no less.
[This message has been edited by Voided (edited 09-03-2004).]
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08:09 AM
alienfiero Member
Posts: 638 From: auburn, wa., usa Registered: Aug 2004
Couldn't be happier.
